【Intelligent Sound Wave】: Our tick repellent for humans delivers high power and efficiency. This outdoor insect repellent is based on physical principles and uses electronic simulation technology to drive away mosquitoes and insects. The mosquito repellent emits different sound waves that stimulate the brains of mosquitoes and insects, making them unable to tolerate these waves for extended periods. They will stay away from the area. 【Safe for Humans and Pets】: The indoor ultrasonic repellent is non-toxic, odorless, and chemical-free, protecting your surroundings. This outdoor insect repellent with special safe ultrasonic technology does not disturb normal life. Made of safe, flame-retardant ABS material, the repellent is environmentally friendly and non-polluting for long-term use. 【Easy to Use】: You can install the ant repellent indoors in seconds. Just turn on the tick repellent and hang it in a suitable place on your body or other devices. With a single button to start, the fly repellent will automatically protect your area. Say goodbye to fleas, cockroaches, mosquitoes, mice, spiders, ants, and other insects. Energy Saving: The spider repellent can be charged in an hour and protects you all day. It comes with a USB power adapter, computer, and power bank. The rat repellent's electrical radiation level is much lower than the industry standard, making it safe to use and providing long-lasting protection. 【Portable Flea Repellent】: The Ranger Ready insect repellent is super small and lightweight, so you can take it with you everywhere. This indoor ultrasonic repellent is suitable for a variety of applications.